Patents by Inventor Franciscus H.A. De Jongh

Franciscus H.A. De Jongh has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Strip line filter, receiver with strip line filter and method of tuning the strip line filter
    Patent number: 5691676
    Abstract: Strip line filter, receiver with strip line filter and method of tuning the strip line filter. In ceramic filters for frequencies from 1 to 2 GHz, strip line resonators lying in one plane and coupled via the side are currently used in the state of the art. For reducing the attenuating effect of such a filter in the passband, the strip line resonators are arranged in two different planes and coupled via the broad side.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: November 25, 1997
    Assignee: U.S. Philips Corporation
    Inventors: Jan Snel, Franciscus H.A. De Jongh, Pieter W. Jedeloo, Antonius C.J.C. Van De Acker-veken